phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 145 Table './myforum/phpbb_sessions' is marked as crashed and should be repaired

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('b420b2d160033c7ad6a0f2921a6dd2de', -1, 1773581384, 1773581384, 'd849d83c', 3, 0, 0)

Line : 187
File : sessions.php